Out of a sudden after I logging in to the 'Ubuntu' session Unity or maybe Compiz doesn't start anymore (actually I'm not sure wether it is Compiz or Unity). I can start Unity manually with setsid unity & and put the command as a startup script but that's not how it should be.

I also tried a lot of "solutions" but none of them helped:

checked for activated 'Unity' module in ccsm

reinstalled lightdm

reset Compiz and Unity

reinstalled all Compiz/Unity packages

many more...

The question now is, how do I get Compiz/Unity to be started propperly at login again?

Meanwhile I got a new Laptop which 'solved' this problem by a clean install. Sadly this is only a workaround which for me worked only when I put a big pause in the startup script. So what I was really interested in was to know the reason why Unity/Compiz didn't start as intended and how to get evrything working fine without a workaround.
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joschiJan 29 '13 at 15:51